A. Monte Services was upfront about what my system needed and did not try to oversell me. The work was clean, professional, and done right the first time.
HVAC Contractor
HVAC Contractor in Long Island, NY
5 specialized services available
We provide complete HVAC services across Long Island, Suffolk County, and Nassau County. Our team handles heating system repair, air conditioning installation, routine maintenance, and emergency service calls. Whether you need a new system installed or your existing unit serviced, we deliver honest work with 15 years of experience.
HVAC Contractor
Serving Long Island, NY and the Florida Panhandle
Services
HVAC Contractor Services in Long Island, NY
We provide complete HVAC services across Long Island, Suffolk County, and Nassau County. Our team handles heating system repair, air conditioning installation, routine maintenance, and emergency service calls. Whether you need a new system installed or your existing unit serviced, we deliver honest work with 15 years of experience.
Heating System Repair
A. Monte Services Corp. provides heating system repair across Long Island, NY for homes and businesses that need reliable heat restored fast.
- Restored heat output so every room in your Long Island home reaches the right temperature
- Lower energy bills by fixing inefficiencies that cause your system to run harder than it should
- Reduced risk of carbon monoxide exposure through combustion safety checks during every repair visit
Air Conditioning Repair
A. Monte Services Corp. provides air conditioning repair across Long Island, NY for homes dealing with cooling failures, humidity issues, and coastal wear.
- Accurate root-cause diagnosis prevents repeat breakdowns and wasted repair spending
- Restored cooling efficiency lowers energy consumption during Long Island's hot, humid summers
- Corrosion checks on outdoor components extend equipment life in Long Island's coastal air
HVAC Installation
A. Monte Services Corp. installs HVAC systems for homes and businesses across Long Island, NY.
- Correctly sized system prevents short-cycling and uneven room temperatures
- Proper outdoor unit placement reduces salt-air corrosion risk for coastal Long Island homes
- New high-efficiency equipment lowers monthly energy use compared to aging systems
HVAC Maintenance
A. Monte Services Corp. provides professional HVAC maintenance for homeowners across Long Island, NY.
- Catches small mechanical issues before they grow into expensive repairs
- Keeps energy bills lower by maintaining clean coils, clear filters, and calibrated airflow
- Reduces the risk of carbon monoxide exposure through heat exchanger inspection
Emergency HVAC Service
A. Monte Services Corp. provides emergency HVAC service across Long Island, NY for heating and cooling failures that cannot wait.
- Restored heat or cooling before indoor temperatures reach unsafe levels
- Accurate root-cause diagnosis that prevents the same failure from recurring
- Technicians experienced with Long Island home types, including older boiler-heated and central-air systems
Why Choose Us
What sets us apart for HVAC Contractor
Family-owned and operated
15+ years of experience
Emergency service available
Honest and integrity-driven
Licensed S Corp
Our Work
Recent Projects in Long Island, NY
Every project in this gallery was built by our crew. Real work, real clients, real results.
Project photos coming soon.
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FAQ
Common Questions About HVAC Contractor in Long Island, NY
Straight answers to the questions homeowners ask before hiring a local contractor.
Yes, we provide emergency HVAC service on weekends and after hours across Long Island.
We service Long Island, Suffolk County, Nassau County, the Hamptons, and surrounding areas.
Yes, we install new heating systems and handle full replacements for residential properties.
Still have questions?
Call us directly. Real answers, no scripts.
Client Reviews
What Suffolk County homeowners say.
5.0
3 Google reviews
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Proudly Based in Mount Sinai, NY
Stop by, call, or book online — we're always nearby when you need us.
Phone
(631) 875-2966Hours
- Monday 8:00 AM - 5:00 PM
- Tuesday 8:00 AM - 5:00 PM
- Wednesday 8:00 AM - 5:00 PM
- Thursday 8:00 AM - 5:00 PM
- Friday 8:00 AM - 5:00 PM
- Saturday Emergency Service Available
- Sunday Emergency Service Available